0.01M CaCl2 was analyzed using soil suspension: pH (CaCl2) of ground coffee into the shell. Put the ground coffee that fills the shell Ca (OH) 2 15% ground coffee that fills the shell put Na2S2O5 15% ground coffee, put a shell through the water. Soil containing shells, coffee soaked in 2% solution of Ca (OH) 2 soil to crust coffee soaked in 2% solution of Na2S2O5 in a ratio of shell coffee on earth 0.5: 1 and 1: 1 for 30 days was 5.16, 7.66, 5.13. , 5.35, 5.67, 6.34, respectively (in a ratio of 0.5: 1), and 5.84, 7.72, 5.62, 6.41, 6.16, 7.15, respectively (in the ratio 1: 1).
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